/**
* Set the current SocketSession PageID back to null
* and then let users know current user is leaving the page
* @param SS_HTTPRequst $message
* @return void
*/
public function leave($message)
{
$data = $this->getMessageBody($message);
$pageId = $data->pageId;
$socketId = $this->getMessageSocketID($message);
// update current socket session
$session = SocketSession::get()->filter('SocketID', $socketId)->first();
// failsafe
if (!$session || !$session->exists()) {
$session = new SocketSession();
$session->MemberID = Member::currentUserID();
$session->SocketID = $socketId;
}
$session->PageID = null;
$session->write();
$this->emitUserLeaving($socketId, $pageId, $session->Member());
}
